Global Patent Index - EP 0349032 A3

EP 0349032 A3 19900418 - A PROCESS FOR MAKING POLYMERIC PRODUCTS OF HIGH TENSILE STRENGTH

Title (en)

A PROCESS FOR MAKING POLYMERIC PRODUCTS OF HIGH TENSILE STRENGTH

Publication

EP 0349032 A3 19900418 (EN)

Application

EP 89201547 A 19890615

Priority

NL 8801524 A 19880615

Abstract (en)

[origin: EP0349032A2] The invention relates to a process for making polymeric products of high tensile strength, and to the products obtained. By means of vapour deposition polymerization, a chemically non-crosslinked polymeric material having a theoretical tensile strength at break of at least 10 GPa, preferably at least 15 or even at least 20 GPa, is formed. Said polymeric material is then drawn under essentially oxygen-free conditions to a draw ratio above 10, preferably at least 20 or even at least 30 or 40. The polymeric material preferably is a poly(para-xylylene) or poly-p,p min -dimethylenebiphenyl polymer having a weight average molecular weight of 10<4>-10<7>. The drawing step is preferably performed at a temperature in a condis phase of the polymer.

IPC 1-7

C08G 61/02; D01F 6/00

IPC 8 full level

D01F 6/00 (2006.01); C08G 61/00 (2006.01); C08G 61/02 (2006.01); C08J 5/18 (2006.01); D01F 6/76 (2006.01); D01F 6/96 (2006.01); D01F 9/24 (2006.01)

IPC 8 main group level

D01F (2006.01)

CPC (source: EP KR)

C08G 61/02 (2013.01 - KR); C08G 61/025 (2013.01 - EP); C08J 5/18 (2013.01 - EP); D01F 6/00 (2013.01 - KR); D01F 6/96 (2013.01 - EP); C08G 2261/3424 (2013.01 - EP)

Citation (search report)

  • [A] US 3509075 A 19700428 - NIEGISCH WALTER D, et al
  • [XP] POLYMER BULLETIN, Vol 19, Number 6, 20/06/1988, New York, USA, H. VAN DER WERFF e.a "High strength and high modulus fibers of poly(p-xylyene)" (pages 587-594)
  • [AD] JOURNAL OF POLYMER SCIENCE, PART A-1, Vol 4 12/1966, New York, USA.; W.F. GORHAM "A New, general synthetic method for the preparation of linear poly-p-xylylenes" pages 3027-3039
  • [AD] JOURNAL OF POLYMER SCIENCE: PART B: POLYMER PHYSICS Vol 24, 05/1986, New York, USA; D.E. KIRKPATRICK e.a "On the reversibility of the crystalline phase transitions of poly(p-xylylene)" pages 931-933
  • [AD] JOURNAL OF POLYMER SCIENCE, POLYMER PHYSICS EDITION Vol 11, 12/1973, New York, U.S.A.; R. IWAMOTO e.a "Crystal structure of poly-p-xylylene. I. The alfa form" pages 2403-2411

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0349032 A2 19900103; EP 0349032 A3 19900418; AU 4315489 A 19900112; BR 8906969 A 19901211; DK 38890 A 19900214; DK 38890 D0 19900214; JP H03500062 A 19910110; KR 900701885 A 19901204; KR 940008988 B1 19940928; NL 8801524 A 19900102; WO 8912655 A2 19891228; WO 8912655 A3 19900308

DOCDB simple family (application)

EP 89201547 A 19890615; AU 4315489 A 19890615; BR 8906969 A 19890615; DK 38890 A 19900214; JP 50979989 A 19890615; KR 900700293 A 19900213; NL 8801524 A 19880615; US 8902557 W 19890615